EON cpu system with ESP8266/ESP32. An emulator is included. This is a very simple 32 bit EON cpu system, with 8KB ROM and 32/128KB RAM. The estimated clock frecuency is about 8MHz.
- esp8266 or esp32
- DS1307 serial RTC, I2C, 3.3 or 5v
- breadboard, one resistor and dupont wires
Prerequisites:
- eonrom.img from eonrom
- arduino-cli
- a serial terminal emulator. I use picocom, but any other will work.
to build emulator, just type make
to build arduino image, type make compile
and finally type make upload && make com to enjoy your system !
check the gallery images. There are 3 components, from left to right:
- RTC clock
- MCU
- SPI card reader
- i2c bus: pin20(SDA) pin21(SCL)
- spi bus: pin52(SCK) pin50(MISO) pin 51(MOSI) ping 53(SS active low)
unconnected -+
unconnected -+
SCL -+
SDA -+
VCC -+
GND -+